First step is to go through normal support channels. If they don't help (eg. comes back from repair with a different issue, or not repaired at all), try one more time through another method (ie. if you tried apple store first, try applecare telephone second or vice versa). If you have the same problem, its time to turbo.

MacRumors attracts a broad audience
of both consumers and professionals interested in
the latest technologies and products. We also boast an active community focused on
purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.